Heat-treating apparatus



1H1. A. LEW

HEAT TREATING APPARATUS Fila'd Oct. 16, 19% 3 Sheets-Shem 2 I INVENTOR 754m f.

HEAT TREATING APPARATUS 6 Sheets-5mm 3 NVEWTW Inn Bil

Patented epic lhdo Application filed october '16, that. tjertal Ito. aerate.

To all whom it may concern:

Be it known that l, rill. Lewis, a citizen of the United States, and a resident of Norristown, in the county of Montgomery and State of Pennsylvania, have invented a new and useful improvement in lleat-Treating Apparatus; and l do hereby declare the following to be a full, clear, and exact description thereof.

lily invention relates to heat treating apparatus and particularly to annealing furnaces andapparatus for handling the material to be annealed.-

The invention constitutes an improvement over my prior Patent 1,425,499, issued August 8, i922.

Une object of my invention is to provide an improved form and arrangement of furnaces of the character referred to.

Another object of my invention is to provide improved means of supporting and ma nipulating the material to be treated in the furnace @ne of the forms which my invention may take is shown in the accompanying drawing wherein Fig. l is a view, partially in end elevation and partially in section, of a furnace arrangement and operating mechanism embodying my invention; Fig. 2 is a view, partially in side elevation and partially in section, of the apparatus of big. it; and Fig. 3 is a sectional plan view of the ap paratus of Figs. l and 2..

The furnace comprises a lower compartment 4i hereinafter termed the water chamher, having a bottom wall 5 end walls 6 and side walls '2" that may be formed of re inforced concrete or other suitable material, Supported upon the side and end walls of the chamber 4 is an annealing chamber a through which the articles tobe heated are passed. The chamber/ is provided with the usual top and side walls and the end doors 9 andltl. The chamber 8 is supported intermediate its ends by longitudinally transversely extending ll-beanis ll and lil' (Fig, 2) whose ends are embedded in or,

supported by the walls 6 and l" of chamber t. j

The bottom of the chamber 8 is preferably composed (Fig 3) of sheet iron til, red briclr it and fire briclt 15, though. of course other material may be employed if desired The bottom of the annealing chamber 8 is provided with elongated openings id that are disposed. in staggered relation as shown in Fig. 3, for a purpose hereinafter to be described. The furnace is likewise provided with flues 17 that lead to vthe stack 18 and the stack 18 is provided with adamper 19. lhe chamber a may be heated either electrically or by combustion The water for the chamber at is supplied from any desired source, and the level therein is preferably maintained atthe level of the overflow pipe 20 (Fig 1)., A drain valve 20 is also provided to clear the chanceher or water when desired. The overflow and the water is drained oil to a cooling reservoir through a pipe 2i Water may of course be supplied to the chamber l continuously or intermittently, as desired.-

lairs of pillars or piers 22 are mounted within the chamber *l-for supporting shafts 23 upon which are mounted. roclier arms 2t,

pivotally connected to and spaced axially of the shafts 23,. To the outer end of each arm 2a is connected alever or oscillator 25 the oscillators 25 are provided intermediate their ends with enlargements 26 that are'ringlilre or annular in form, for the reception of eccentrics 27. The eccentrics at are rigidly secured to shafts 28 that are rotatably supported in bearings QQll ig, l) and are provided on their outer ends with beveled gear wheels '30, some of the gear wheels being omitted in llig. 2 for the sake of clarity,

"l he gear wheels 30 are driven. by bevel oinions 31 that are mounted upon a shaft 2 which is connected through a beveled gear wheel 33 with bevel pinion 3t mounted upon shaft 35 which is driven by diderenetial mechanism 36 having worm wheels 3?" that are driven. by motors 38. This arrangement of motors and ditlerential mechanism mahes for uniformity of speed and smoot nessof movement of the apparatus just described "llo operate the the doors il and fill are opened b of a mo tor all which through suitable conareetions moves the chains ill that connected to cords or tables ll-Q that around suitable sheaves, shown Fig, 9; and are connected to doors ll ill to raise the .lhe .rnotors 38 are then started to operate the eccentrics at and hoped? an oscillatory movement to the levers Q5" ldheets of material all are supplied through the furnace door and are engaged by till llltl llli assesses upper ends of the levers 25 Preferably the levers 25 are actuated at a relatively fast speed during this stage of the operation. As soon as the material has entered.

the furnace the doors ere closed and the speed of the motors 8% reduced so that the material will move through the furnace a lovv rate of speed in order that it may be properly heat-treated by the time it reaches the outlet door 10. The purpose in continuously moving the sheets of material 43 While in the furnace is to avoid streaking or marking of the sheets by reason of th ir contact with the levers 25, and to maintain they prot t the bearings from dust Which I Pizzas mav fall through 0 enings 16 in that a A J o '1 such. dust will nos circulate rnrough the chamber The preferably oil, A U I of the member 4% to prevent leakage of water slisft 32.

Claims to the mechanism for moving the material form th basis of my application, Serial No, 744,199 riled "October 17th, 192%.

Various in detail and general arrangement may be madevvithout depart ing Within the chamber 4C may un in rubber bearings without of box is provided in the end ing from the spirit and scope of the invention defined in the accompanying claims claim as my invention:

Heat treating apparatus comprising an annealing chamber, a cooling chamber disposed therebeneath, oscillatory members mounted Within said cooling chamber and having progectlng portions extending lnto .said annealing chamber for moving the material to be annealed, and means for supplying cooling fluid to said cooling chamber.

2. Heat treating apparatus comprising an annealing chamber, oscillatory members mounted exteriorly of said chamber and having projections extending into the chamher, for moving the material to be treated, and means for supplying cooling liquid to the bearings of said members.

3 Heat treating apparatus comprising an annealing chamber, a chamber therebeneath for containing cooling liquid, actuating members mounted Within said cooling chamher and extending into the annealing chamher for moving material to be treated, driving mechanism mounted exteriorly of the cooling chamber and having driving connection with said actuating members.

i. Heat treating apparatus comprising an annealing chamber, a chamber therebeneath for containing cooling liquid, actuating members mounted Within said cooling chainher and extending into the annealing chamber for moving material to be treated, driving mechanism mounted exteriorly of the cooling chamber and having driving connection with said actuating-members, the bearings for actuating members being disposed beneath the surface of the liquid of the cooling chamber, and the driving connection from said driving mechanism extending through one Wall of the cooling chamber.

5. Heat treating apparatus comprising a heated chamber, cooling apparatus disposed adjacent to said chamber, and means cooled by means of said a paratus for movingmaterial in said cham er.

In testimony whereof I the said HARRY A. LEWIS have hereunto set my hand.

HARRY A. LEWIS. 

